Learning how to camp in the roof top tent when it's cold out isn't easy. Heater blankets are a good option except when you have to get out of them like if you have to pee. The Buddy Heater was a no go for us because of the carbon monoxide and the diesel heaters requires a large power source so that was the reason we didn't go down that route. We like how easy it is to get around with a roof top tent but miss the convenience of our No Boundaries Camper. This was a bit of a learning curve for us since this was only our second experience with roof top tents.